Compliance record
Other contaminants detected
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of this
system's samples — over 100% is worth reading, but is not by itself a
violation. Where a single sample came in higher than that percentile, it
is noted under the bar. Formal violations are listed separately.
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 580 µg/L 5.8% of the EPA limit 10000 µg/L | 10/32 | SYR4 | 2012–2019 |
| Copper | 436.7 µg/L 34% of the EPA limit 1300 µg/L
worst single sample: 503 µg/L | 7/30 | SYR4 | 2012–2018 |
| Atrazine | 0.1075 µg/L 3.6% of the EPA limit 3 µg/L
worst single sample: 0.1100 µg/L | 6/22 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 578 µg/L 5.8% of the EPA limit 10000 µg/L
worst single sample: 580 µg/L | 5/16 | SYR4 | 2012–2019 |
| Bromodichloromethane | 3.04 µg/L No EPA limit set
worst single sample: 3.1 µg/L | 3/3 | SYR4 | 2013–2019 |
| Bromoform | 8.59 µg/L No EPA limit set
worst single sample: 9 µg/L | 3/3 | SYR4 | 2013–2019 |
| Dibromochloromethane | 5.08 µg/L No EPA limit set
worst single sample: 5.1 µg/L | 3/3 | SYR4 | 2013–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 3/3 | LCR | 2021 |
| TTHM | 15.65 µg/L 20% of the EPA limit 80 µg/L
worst single sample: 15.9 µg/L | 3/3 | SYR4 | 2013–2019 |
| Total Haloacetic Acids (HAA5) | 4.49 µg/L 7.5% of the EPA limit 60 µg/L
worst single sample: 4.6 µg/L | 3/3 | SYR4 | 2013–2019 |
| Chloroform | 1.765 µg/L No EPA limit set
worst single sample: 1.8 µg/L | 2/3 | SYR4 | 2013–2019 |
| Dibromoacetic Acid | 2.155 µg/L No EPA limit set
worst single sample: 2.2 µg/L | 2/3 | SYR4 | 2013–2019 |
| Trichloroacetic Acid | 1.775 µg/L No EPA limit set
worst single sample: 1.8 µg/L | 2/3 | SYR4 | 2013–2019 |
| Dichloroacetic Acid | 1.1 µg/L No EPA limit set | 1/3 | SYR4 | 2013–2019 |
| Monobromoacetic Acid | 1.7 µg/L No EPA limit set | 1/3 | SYR4 | 2013–2019 |
67 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,3,7,8-TCDD2,4,5-TP2,4-DAntimony, TotalArsenicBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneFluorideGlyphosateGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Hakalau-Wailea
Is Hakalau-Wailea tap water safe to drink?
EPA monitoring detected 15 contaminants in Hakalau-Wailea's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.
What contaminants were detected in Hakalau-Wailea's water?
EPA monitoring detected Nitrate, Copper, Atrazine, Nitrate-Nitrite, Bromodichloromethane, and others. The full list with the level and data source for each is above.
How many people does Hakalau-Wailea serve?
Hakalau-Wailea reports serving 402 people in Hawaii, per its EPA record.
Has Hakalau-Wailea had any water quality violations?
The EPA has no formal drinking-water violations on file for Hakalau-Wailea.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.